چكيده به لاتين
Abstract:
Increasing concerns about environmental warnings, has forced the manufacturers to attempt for applying solutions in environmental management, also global force made the organizations to produce environmental friendly products and services. This issue led to creation of a new concept as “green supply chain management” in business that is a combination of environmental-based thinking and supply chain. The assessment and suppliers’ selection is a multi-criteria decision making process, which includes various quantitative and qualitative criteria, and regarding ever-increasing issue of outsourcing, this approach has become more important. The purpose of this thesis is to present a two-step approach for supplier’s assessment and selection and order allocation in a green supply chain under uncertainty conditions. In the first step which is a strategic step, supplier’s qualification is assessed based upon conventional and green criteria and weighting and ranking are done. Then suppliers go into the second step which is a strategic and operational step. In the second step, a mathematical model is propsed based on supplier’s characteristics and limitations such as supplier’s capacity, quality of delivered products, cost and etc.; so relation or non-relation with each supplier and the amount of good bought from each supplier are determined using the proposed model. Our goal is to present a new two-step approach for assessing and being related with supplier’s with consideration of green (environmental) and conventional criteria which conventional and green criteria are considered separately. Suppliers are investigated with conventional criteria at first and then with green criteria; and then are weighted and ranked. Finally, amount of relation and optimal order amount are determined for them. The supply chain considered for such purpose is single-product and single period under uncertainty conditions. First step approach is based on multi –criteria decisions and second step is based on multi-objective mathematical planning models under uncertainty conditions. Also, due to hierarchical structure and internal dependence between criteria in both conventional and green criteria, network analysis process and fuuzy Dymtl are used in the first step. In the second step, a multi-objective linear mathematical programming is proposed under uncertainty conditions which a fuzzy approach is used for solving it. In order to observe the application of issue investigated, data obtained from Golbarg Baharan food industry is tested to verify proposed approach.
Keywords: Green supply chain management, Bottle of liquid oil, supplier selection, order allocation, Fuzzy Multi-Criteria Decision Making, Multi-Objective Mathematical Programming
